* {
    margin: 0;
    padding: 0;
}

.tbody {
    /*background-image: url("tt.gif");*/
    font-family: "楷体";
    background: #9fa596;
}

.sss {
    line-height: 30px;
    width: 300px;
}

#list_registered {
    border: 1px solid #000000;
    position: absolute;
    margin-left: 550px;
    margin-top: 270px;
}
h3{
    text-align: center;
}
button{

}
